A substance enhancing virus growth and antagonistic to interferon action.
D000818:Animals; D001103:Arboviruses / Q000254:growth & development; D001681:Biological Assay; D002642:Chick Embryo; D046508:Culture Techniques; D003588:Cytopathogenic Effect, Viral; D007372:Interferons / Q000037:antagonists & inhibitors*; D014020:Tissue Extracts / Q000302:isolation & purification* / Q000494:pharmacology; D014779:Virus Replication / Q000187:drug effects
D014020:Tissue Extracts; D007372:Interferons